<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Thermometer</title>
<meta name="description" content="A thermometer." />
<!-- Copyright 1998-2019 by Northwoods Software Corporation. -->
<meta charset="UTF-8">
<script src="../release/go.js"></script>
<script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
<script id="code">
  function init() {
    if (window.goSamples) goSamples();  // init for these samples -- you don"t need to call this

    var $ = go.GraphObject.make;  // for conciseness in defining templates


    myDiagram = $(go.Diagram, "myDiagramDiv",  // create a Diagram for the DIV HTML element
                  {
                    layout: $(go.GridLayout, { isOngoing: false, wrappingColumn: 4 }),
                    "animationManager.isEnabled":false,
                    initialContentAlignment: go.Spot.Center,  // center the content
                    "undoManager.isEnabled": true  // enable undo & redo
                  });

    // ResizingTool customization: add just one handle, instead of eight
    myDiagram.toolManager.resizingTool.makeAdornment = function(resizeObj) {
      var adornment = null;
      adornment = new go.Adornment();
      adornment.type = go.Panel.Spot;
      adornment.locationSpot = go.Spot.Center;

      var surrogate = new go.Placeholder();
      surrogate.isPanelMain = true;
      adornment.add(surrogate);

      adornment.add(this.makeHandle(resizeObj, go.Spot.MiddleTop));

      adornment.category = this.name;
      adornment.adornedObject = resizeObj;
      return adornment;
    }

    var ORIGINAL_HEIGHT = 400;

    /* The thermometer node consists of a Spot Panel with 6 children:
        0: The BarSpace, which is the main element and
        1: The Farenheit scale, on the left
        2: The Celsius scale, on the right
        3: The shape that represents mercury in the thermometer
        4: (Cosmetic) The stem that attaches to the bulb
        5: (Cosmetic) The bulb

        The two Graduated Panels use alignmentFocusName to make sure their main Shapes
        line up with the Spot Panel"s main element, BarSpace.

        1|0|2
        1|0|2
        1|0|2
        1|0|2
        1|3|2
        1|3|2
         |4|
         |5|
    */

    myDiagram.nodeTemplate =
      $(go.Node, "Spot",
        { resizable: true, resizeObjectName: "BarSpace", locationObjectName: "Bulb", locationSpot: go.Spot.Center },

        $(go.Shape,
          { name: "BarSpace", width: 25, height: ORIGINAL_HEIGHT, strokeWidth: 0, fill: "rgba(0,0,0,.05)" },
          new go.Binding("height").makeTwoWay()
        ),

        // Farenheit scale, on the left:
        $(go.Panel, "Graduated",
          {
            background: "white",
            graduatedMin: -40, graduatedMax: 80,
            graduatedTickBase: 0, graduatedTickUnit: 1,
            alignment: go.Spot.BottomLeft,
            alignmentFocus: go.Spot.BottomLeft,
            alignmentFocusName: "line"
          },
          new go.Binding("graduatedMax", "", function(data) {
            if (data.type === "scaling") return 80;
            return (data.height * 0.3) - 40;
          }),
          $(go.Shape, { name: "line", geometryString: "M0 0 V-" + ORIGINAL_HEIGHT, stroke: "gray" },
            new go.Binding("height")),
          $(go.Shape, { alignmentFocus: go.Spot.Bottom, interval: 2, strokeWidth: 1,  geometryString: "M0 0 V15" }),
          $(go.Shape, { alignmentFocus: go.Spot.Bottom, interval: 10, strokeWidth: 2,  geometryString: "M0 0 V20" }),
          $(go.TextBlock, { interval: 20, font: "22px Georgia", alignmentFocus: new go.Spot(1, 0.5, 20, 0) }),
          // Mark 32 degrees on the farenheit scale:
          $(go.TextBlock, { interval: 32, graduatedFunction: function(n) { return n === 32 ? "32—" : "" },
            font: "bold 12px Georgia", stroke: "red", alignmentFocus: new go.Spot(1, 0.5, 20, 0) })


        ),

        // Mercury bar, which represents the values of farenheit and celsius
        $(go.Shape,
          {
            width: 25, strokeWidth: 0, fill: "red",
            alignment: go.Spot.Bottom,
            alignmentFocus: go.Spot.Bottom,
           },
           new go.Binding('fill', 'type', function(t) { return t === "scaling" ? "lightcoral" : "red" }),
           // To determine the mercury level, look at both data.farenheit and data.celsius, but prefer celsius
           new go.Binding("height", "", function(data) {
              var thermometerHeight = ORIGINAL_HEIGHT;
              if (data.type === "scaling") thermometerHeight = data.height;
              if (data.celsius !== undefined) {
                // (celsius + minimum value) / (total celsius range) * height
                return Math.max(0, ((data.celsius + 40) / 67) * thermometerHeight );
              } else if (data.farenheit !== undefined) {
                // (farenheit + minimum value) / (total farenheit range) * height
                return Math.max(0, ((data.farenheit + 40) / 120) * thermometerHeight );
              } else {
                return 0;
              }
            }
           ),
           new go.Binding("maxSize", "height", function(h) { return new go.Size(NaN, h) })
        ),

        // Celsius scale, on the right:
        $(go.Panel, "Graduated",
          {
            background: "white",
            // -40 to 27 because we picked -40 to 80 for farenheit, and want them to line up
            graduatedMin: -40, graduatedMax: 27,
            graduatedTickBase: 0, graduatedTickUnit: 1,
            alignment: go.Spot.BottomRight,
            alignmentFocus: go.Spot.BottomRight,
            alignmentFocusName: "line2"
          },
          new go.Binding("graduatedMax", "", function(data) {
            if (data.type === "scaling") return 27;
            return (data.height * 0.1675) - 40;
          }),

          $(go.Shape, { name: "line2", geometryString: "M0 0 V-" + ORIGINAL_HEIGHT, stroke: "gray" },
            new go.Binding("height")),
          $(go.Shape, { interval: 2, strokeWidth: 1,  geometryString: "M0 0 V15" }),
          $(go.Shape, { interval: 10, strokeWidth: 2,  geometryString: "M0 0 V20" }),
          $(go.TextBlock, { interval: 20, textAlign: "left", font: "22px Georgia",
            alignmentFocus: go.Spot.Left, segmentOffset: new go.Point(0, 22)
          })
        ),

        // Cosmetic: The stem and bulb
        $(go.Shape,
          {
            width: 25, height: 10, strokeWidth: 0, fill: "red",
            alignment: go.Spot.Bottom
           },
           new go.Binding('fill', 'type', function(t) { return t === "scaling" ? "lightcoral" : "red" })
        ),
        $(go.Shape, "Circle",
          {
            name: "Bulb",
            width: 55, height: 55, strokeWidth: 0, fill: "red",
            alignment: go.Spot.Bottom,
            alignmentFocus: go.Spot.Top,
           },
           new go.Binding('fill', 'type', function(t) { return t === "scaling" ? "lightcoral" : "red" })
        )
      ); // end node template

    myDiagram.model = new go.GraphLinksModel(
    [
      { height: 400, celsius: 20 },
      { height: 250, celsius: -10 },

      { type: "scaling", height: 400, farenheit: 22 /*, celsius: 0*/ },
      { type: "scaling", height: 250, farenheit: 68 /*, celsius: 20*/ },
    ]);

  }



</script>
</head>
<body onload="init()">
<div id="sample">
  <!-- The DIV for the Diagram needs an explicit size or else we won"t see anything.
       This also adds a border to help see the edges of the viewport. -->
  <div id="myDiagramDiv" style="border: solid 1px black; width:800px; height:500px"></div>
  <p>
    This sample uses <a href="../intro/graduatedPanels.html">Graduated Panels</a> and <code>Panel.alignmentFocusName</code> to line up thermometer scales.
  </p>
  <p>
    The thermometers are resizable, with two types. For the first two (default), resizing the thermometer reduces
    or increases the range of the values. For the second two (<code>type: "scaling"</code>), resizing
    the thermometer keeps the range, and scales the thermometer.
  </p>
</div>
</body>
</html>